Читать книгу Marvels of Scientific Invention - Thomas W. Corbin - Страница 3

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Table of Contents

fig. page
1. Principle of Galvanometer 30
2. String Galvanometer 31
3. Duddell Thermo-Galvanometer 39
4. Construction of a Voltmeter 64
5. The Working of a Refrigerating Machine 70
6. Hertz's Machine 155
7. Hertz "Detector" 156
8. 9. 10. Wireless Waves 158
11. A Wireless Antenna 164
12. Poulsen's Machine 166
13. 14. How Pictures are sent by Wire 177
15. Message received by Telewriter 189
Marvels of Scientific Invention

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